Hi Marnix,
There appears to be a lot of Diamond Firetails about this year (nothing to
complain about there) and you would certainly expect them there (well I
would). As for a Owlet-Nightjar or a White-throated Nightjar. There is big
size difference, though in a short view, that can be hard to tell. Nightjars roost on the ground whereas Owlet-Nightjars roost in tree
hollows. Their flight is quite different too. A Nightjar flies rather
hawk-like, whereas an Owlet-Nightjar flies more like a Willie Wagtail (these are
loose comparisons). You wouldn't see wing spots on a White-throated
Nightjar unless it was a quite good look. I
doubt that we know anywhere near enough to be sure of whether Nightjars migrate
away from here, although I think most records are in summer time.
Philip
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